IBM 5280 Manual page 82

X
9
042
DATA ENTRY MAP
A-AI DISPLAY
PAGE 10 OF 18
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DANGER
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THE NEXT PROCEDURE IS A
POSSIBLE SHOCK HAZARD,
BE EXTRA CAREFUL.
- Power off.
- Disconnect the Display AC
connector (MIM
141).
- Power on.
- With the CE meter, measure the
AC volta~e for the display at
the AC
voltag~
connector (MIM
141 ) .
Is
99
to
121
Vac present?
Y N
043
GO TO MAP
8000,
ENTRY POINT A.
044
- Power of·f.
- Check the Display fuse (MIM
141 ) •
Is the Display fuse OK?
Y N
z
045
- Replace the Display fuse (MIM
141).
Reconnect the Display AC
connector (MIM 141).
- Power on.
If the new fuse opens,
replace the Display Unit (MIM
181).
w
Z
9
MAP
1010-10
046
- Defective Display Unit (MIM
181) •
047
- Probe the
P20-006,
'+
(MIM 217).
display connector
Horizontal Drive'
Up light: On
Down' 1 i ght: On
Are the lights correct?
Y N
048
- Power off.
- Disconnect A-AI-POI
217) •
- Power on.
(MIM
- Probe
A-Al-TP16,
'+
Horizontal
217).
Drive' (MIM 200,
Up light: On
Down light: On
Are the lights correct?
Y N
049
- Power off.
- Reconnect A-AI-POI
217).
- Power on.
(MIM
- Probe the display connector
P20-008
(MIM
217).
Up light: On
Down light: On
Are the lights correct?
Y N
I I
1 1 1 1
222 1
A A A A
ABC D
EC840874 PEC839787
MAP 1010-10